The following errata report has been verified for RFC6781,
"DNSSEC Operational Practices, Version 2". 

--------------------------------------
You may review the report below and at:
https://www.rfc-editor.org/errata/eid6692

--------------------------------------
Status: Verified
Type: Technical

Reported by: Jarle Fredrik Greipsland <[email protected]>
Date Reported: 2021-09-22
Verified by: Warren Kumari (Ops AD) (IESG)

Section: Appendix D

Original Text
-------------
    ------------------------------------------------------------
    new DS             |        pre-publish                    |
    ------------------------------------------------------------
    Parent:
     NS_A                            NS_A
     DS_A DS_B                       DS_A DS_B
    ------------------------------------------------------------
    Child at A:            Child at A:        Child at B:
     SOA_A0                 SOA_A1             SOA_B0
     RRSIG_Z_A(SOA)         RRSIG_Z_A(SOA)     RRSIG_Z_B(SOA)

     NS_A                   NS_A               NS_B
     RRSIG_Z_A(NS)          NS_B               RRSIG_Z_B(NS)
                            RRSIG_Z_A(NS)

     DNSKEY_Z_A             DNSKEY_Z_A         DNSKEY_Z_A
                            DNSKEY_Z_B         DNSKEY_Z_B
     DNSKEY_K_A             DNSKEY_K_A         DNSKEY_K_B
     RRSIG_K_A(DNSKEY)      RRSIG_K_A(DNSKEY)  RRSIG_K_A(DNSKEY)
                            RRSIG_K_B(DNSKEY)  RRSIG_K_B(DNSKEY)
    ------------------------------------------------------------


Corrected Text
--------------
    ------------------------------------------------------------
    new DS             |        pre-publish                    |
    ------------------------------------------------------------
    Parent:
     NS_A                            NS_A
     DS_A DS_B                       DS_A DS_B
    ------------------------------------------------------------
    Child at A:            Child at A:        Child at B:
     SOA_A0                 SOA_A1             SOA_B0
     RRSIG_Z_A(SOA)         RRSIG_Z_A(SOA)     RRSIG_Z_B(SOA)

     NS_A                   NS_A               NS_B
     RRSIG_Z_A(NS)          NS_B               RRSIG_Z_B(NS)
                            RRSIG_Z_A(NS)

     DNSKEY_Z_A             DNSKEY_Z_A         DNSKEY_Z_A
                            DNSKEY_Z_B         DNSKEY_Z_B
     DNSKEY_K_A             DNSKEY_K_A         DNSKEY_K_B
     RRSIG_K_A(DNSKEY)      RRSIG_K_A(DNSKEY)  RRSIG_K_B(DNSKEY)
    ------------------------------------------------------------


Notes
-----
Figure 15 in Appendix D is depicting the phases of a double DS KSK rollover 
operator change.  One rationale for applying this approach is to avoid the 
exchange of signatures (RRSIGs) between operators, and limit exchanges to the 
public parts of the ZSKs in use.  In the pre-publish phase in the figure, it is 
shown that Child A publishes a signature over the DNSKEY RRset generated by 
Child B's KSK, and that Child B publishes a signature over the DNSKEY RRset 
generated by Child A's KSK.  This is contrary to the rationale given for this 
method, and also not required, since the pre-published double DS RRs at the 
parent zone should enable a validator to validate the signature generated by 
any of the two KSKs in use, thus one RRSIG RR for the DNSKEY RRset is 
sufficient at each child.  Therefore, the RRSIG_K_B(DNSKEY) RR should be 
removed from Child A, and the RRSIG_K_A(DNSKEY) should be removed from Child B.


[Warren Kumari, Ops AD]: Marking as Verified, please see the thread at 
https://mailarchive.ietf.org/arch/msg/dnsop/voplw-sLcS-6u458reknBGQR2T0/ for 
additional information / justification. 

--------------------------------------
RFC6781 (draft-ietf-dnsop-rfc4641bis-13)
--------------------------------------
Title               : DNSSEC Operational Practices, Version 2
Publication Date    : December 2012
Author(s)           : O. Kolkman, W. Mekking, R. Gieben
Category            : INFORMATIONAL
Source              : Domain Name System Operations
Stream              : IETF
Verifying Party     : IESG

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